Inverted primer removal device



Aug. 21, 1945. L. B. PETERSEN INVERTED PRIMER REMOVAL DEVICE Filed Dec. 20, 1943 2 Sheets-Sheet 1 INVENTOR.

LEAAA/DB P7RSEN BY 1 v A770 A/EYJ Aug. 21, 1945., 1.. B. PETERSEN 7 2,383,339

INVERTED PRIMER REMOVAL DEVICE Fild Dec. 20, 1945 2 Sheets-Sheet 2- Patented Aug. 21, 1945 5;

f i 2,383,339 v j p INVERTED PRIMER REMOVAL DEVICE Ireland B. Petersen, Salt Lake City, Utah, assign or to Remington Arms-Company, Inc Bridge port, Conn., a corporation of Delaware v Application December 20, 1943, SerialNo. 514,886

5 Claims. (01. zos ss) p g v This invention relates toithe manufacture of do not have tofollow this precise arrangement ammunition components; and, particularly, to a and can be chosen as desired. The inspection machine forassembling primers .in acartridge stations may be arranged to stop the case transcase; e x fer mechanism or machine in any'suitable man '2 A cartridge of the small'arms variety includes 5 ner. The case transfer mechanism is shown genacase, primer, j m and opellant orally at!!! with a reciprocating bar II. .This powder. Theprimer consists of a cup, primer inbar has a reciprocatory motion in the longitugre'dient, foil and anvil;'- The primer material is dina d ection a d a C D Y on in of a high explosive variety which is sensitive to direction transverse t er givin resultant the blow of a firing pin. One-type of machine quadrangular motion. The pivoted fingers 12 for assembling the primers and cartridge cases are located oppositethe various stationsfor ascomprises a transfer means for moving the carsisting in po o the cartridge eases aS t y tridge cases under selected tools. The primers are transferred to said station. The cartridge are brought to a position where they can be cases may be fedfrom a hopper (not shown)"or transferred over thepartridge case at the afore- 15 by hand to the transfer mechanism 10, the cases mentioned station ready for insertion therein. being held vertically, mouth downward, by an It is necessary that the primers be-correctly apertured member (not shown) located below aligned relative to a cartridge case so that they the cases, in Cooperation With the reciprocating will be assembled in the proper relation. The transferbar il-having apertures 21 to grasp the present invention includes a means for removcases. Spring pressed fingers I2 assist in holding ing-p'rimers which are not correctly positioned on and positioning the cases. The transfer bar is thep'rimer transfer mechanism. This and other moved in a quadrangular motion in a well-known objects of the invention 'willbecome apparent manner; The bar, when in the position shown in from the following drawings and description. FigI- L after the upper and lower gates have sep- In the-drawingsi V 25 aratedto remove the upper'tools'and lower tools Fig; 1 is a fragmentary plan view. of a portion from the cas m v s t t t, a ry n a h ofthe device taken in the direction 1-1 of Fig. case to t e n xt s at o sp i p ss d fin rs 3 }With the parts above 'thetransfer table 1 y d ng to allow pas of the a The omitted." gates then come together, holding the cases as 2 i Side elevation r portion of i 1 the tools perform workthereon, at which time looking in the direction 2'2.- v

3 is a fragmentary front iew of one form machine tO- clear the cases, then to the right, and of'the machine. 3 then back toward thefront of the machine to i i 'ig'ii is a sectional view of a primer cup facing en a e t t set o cas s. The primers are fed the'd'esir'ed direction; from hopper 80 onto the belt 24, which carries Fig.5 is a sectional view of a cup turned in the they Primer clips into the primer track 3, b wrong direction. i 24 being moved bypulleys 25 and 26.

Fig. 6 is a fragmentarysectional view of a cari The Cartridge es a e t ansferred, as inditfidge case I cated, from station. to station and the various i InFig; 3, the frame of h machine is Shown 40 operations-performed thereon prior to assembly generally at20 with an upper reciprocating g t of a prime'rin'the'case. The primers indicated 22' carrying tools 23. Thereis also a lower rediagramm y 9 i fed alOng the g oove iprocating carrying punches cooptransfer mechanism. This mechamsm crate with the tools of the'upper gate, the lower arr es a prlmer from the groove 23 to a D0- gate t being shown inasmuch as t ta l sition over a case at station 21 whereua suitable th'erbf a e' t 1 1- tools can be punch will remove the primer from the transfer ranged in Various manners one example is mechanism to the. primer pocket of a case at this as follows: a e r station. v

- 1, Inspection for-flash hol It is undesirable to transfer aninverted primer "2. Inspection for presence of acase. from the primer conveyor feed groove 23 to a 3. Punching of flash hole. position 'over the primer pocket at' station 21 4. Second inspection for flash hole. e a (Fig. 1). Theprimers are fed by a suitable *5; Primer insertion station? I' finger. 28; hown'f smen rily in Fi 1, into 6. Primer seating. flipper fingers 29. Finger 28 is oscillated by le- -Itist'o be'understod, however, that the tools 5 ver 88, which is moved by a suitable cam (not the bar 1 I moves horizontally to the rear of the shown). Flipper fingers 29 are oscillated in time with the transfer mechanism by the means shown generally at 30 so as to carry a primer to a position at 21 over a primer pocket of a case located thereunder. In this oscillatory motion, the primer is inverted as it is transferred from its position in groove 23 to a position over the case. It is necessary for the primer to have the open portion of the cup face upwardly, as shown in Fig. 4, when in the primer conveyor groove.

If the cup is inverted as seen in Fig. 5, it will befacing the wrong way when it arrives at 21, which is undesirable. The egress of primers from groove 23 is regulated by reciprocating finger 28.

The primer transfer means is conventional and may be seen in plan in Fig. 1. It comprises a pair of flipper fingers 29 attached to block 8|, which is pivotally mounted between pointed adjustable pivots '84 which are carried by spaced upright supports 82 and 83. Gear wheel 85 is loosely mounted on the pivoted shaft extending from block 8| toward support 82. A vertically re ciprocating rack 86 operates to oscillate gear 85 in timedv relation to the transfer means so as to bring a primer over a cartridge case at station 21 in time fora downwardly moving punch to carry the primer from the flipper fingers into the primer pocket of a cartridge case.

The gear 85 is frictionally connected to discs 86, discs 86' being connected to block 8| by friction members 81 so that gear 85 will oscillatingly drive block 8| and yet allow yielding in the event of a stoppage.

The inverted primer removal mechanism of the present invention is for the purpose of removing aprimer', which is turned as shown in Fig. 5, from the groove and thus prevent transfer by the flipper fingers 29. The primer cup 33 has an anvil 34 and a suitable primeringredient 35 therein, all of which is conventional. The frame 38 has a reciprocating primer removal pusher 31 operable to push an inverted primer out of feed groove 23 into the removal groove 38 in a manner about to be described. Frame 36 is fastened 'to plate 89 carried bybed 90-by bolt 93 and portion 91 by bolt 94 of the bed of the machine. Pusher 31 is reciprocable when spring 39 is compressed by collar 40. mounted on guide rod M, 92 serving as a stop for collar 40. Collar 40* is reciprocated by arm 42 of bell crank lever 43", the end of- 81' of bell crank lever 43 being contacted and oscillated by a suitable projection, or operator, such as 44 (Fig. 3') mounted on gate 2-! as the gate moves up and down. Lever 43 has an arm 45 pivotally mounted thereon at 46, there being a coiled spring 41 tending to move arm 45 in a counterclockwise direction (Fig. 2) against the adjustable stop 48. The lever 49 is pivotally' mounted on frame 36 at 50. Frame 36 may have a cover plate mounted thereon. Lever 48 has a projection 52 or element attached thereto in some suitable manner which overlies arm 45, and has spring. 53 tending to move the same downwardly. As bell crank lever 43 is oscillated by projection 44, arm 45 turns to move lever 49 in a counter-clockwise direc- .rect position, the point of the feeler will enter therein and allow projection 56 to contact 51, and prevent movement of the pusher bar by spring 39, collar 40 and bell crank lever 43, to rei move the primer from the feed groove. In the event a primer is inverted, as seen in Fig. 5, stud 56' will not contact lug 51 and the oscillation of bell crank lever 43 will cause pusher bar 31 to move and push an inverted primer into the removal groove 38.

What is claimed is:

1. An inverted primer removal device comprising a conveyor for primers; a feeler operable to contact primers on said conveyor at an inverte'd primer removal station; a pusher member for removing primers from said conveyor at said station; and means mounted directly on and actuatedby-said feeler to move in front of said pusher and block movement of said pusher when a primer is located in the correct direction under said feeler. i

2. An inverted primer removal device comprising a conveyor, for the primers; a reciprocable feeler operable to contact primers on said conveyor at an inverted primer removal station; a reciprocable pusher member for removing inverted primers from said conveyor at said station; yieldable means to operate said pusher; oscillatable means to operate said yieldable means and said feeler; and means mounted directly on and actuated by said feeler to move in front of said pusher and to block movement of said pusher when a primer is turned in the desireddirection under said feeler.

3. An inverted primer removal device comprising a conveyor for the primers; a reciprocable feeler operable to contact primers onsaid conveyor at an inverted primer removal station; a reciprocable pusher member for removing inverted primers from said conveyor at said station; yieldable means to operate said pusher; lever means for operating said yieldable means; an arm carried by said lever for actuating said feeler; and meanscmounteddirectly on and actuated by said feeler to move in front of and blockmovement of said pusher when a primer is in the correct position under said feeler;

4. An inverted primer. removal device comprising a conveyor for the primers; an oscillatable feeler arm operable to contact primers on said conveyor at an' inverted primer removal station; a reciprocable pusher member for removing inverted primers from said conveyor at said station, said ushe being substantially aligned with said feeler; yieldable means to operate said pusher; an oscill'atable lever means for actuating said: yieldable means; a lever yieldably mounted on said oscillatable lever, said last mentioned lever engaging said oscillatable feeler arm for actuating the same; and means actuated by said feeler for blocking movement of said pusher by said first mentioned yieldable means when a primer is in the desired direction under said feeler. v

5. An inverted primer cupremoval device comprising a conveyor for the primers including a belt and guide track, said guide track having an aperture for inverted primer removal; an oscillatable feeler arm operable to contact primers on said conveyor at an inverted primer removal station, the feeler being adapted to enter the open end of a primer cup; a reciprocable pusher member for removing inverted primers from said conveyor at said station; said pusher being substantially aligned with said feeler; an oscillatable lever means; a spring connecting said oscillatable lever and said pusher member; an arm yieldably mounted on said oscillatable lever and operable to move said feeler arm toward primer contacting position as the spring is compressed to operate the pusher member; and means on move an inverted primer from said belt into said 10 inverted primer removal aperture.

LELAND B. PETERSEN. 

